Bolt or spike extractor.



No. 712,082. Patented on. 28, I902.

w. c. monmu.

BOLT 0R SPIKE EXTBACTOB. I

(Application filed Apr. 11, 1902'.)

, (No Model.)

INVENTOR W G M077 v ATTORNEY.

UNITED STATES WILLIAM C. MORRILL,

PATENT OFFICE.

OF NEW YORK, N. Y.

BOLT OR SPIKE EXTRACTOR.

SPECIFICATION forming part of Letters Patent N 0. 712,082, dated October 28, 1902.

, Application filed April 11. 1902;

To aZZ whom it may concern:

Be it known that I, WILLIAM C. MoRRILL, a citizen of the United States, residing at the city of New York, in the borough of Manhattan and State of New York, have invented a new and useful Improvement in Bolt or Spike Extractors, of which the following is a specification.

The invention relates to a device for extracting drift-bolts from timbers, such as are used in the construction of railroad bridges, trestles, 850., of which a full, clear, and exact description will be given hereinafter.

The elements of this invention are well known in the state of the art, and it is their combination, as hereinafter claimed, which is new.

In the drawings, Figure 1 represents a part sectional and elevational View of the device in its entirety. Fig. 2 represents a plan view of the upper portion thereof. Fig. 3 represents a cross-section of the vertically-arranged lifting rod or shaft.

Similar letters refer to similar parts throughout the drawings, in whichct represents the metallic frame, forming, as it does, the main support or body of the device, the upper portion of which 'is provided with means for the reception of the bearings of the worm-wheel b, the latter of which is actuated by the worm 0, having its bearings held within the journals d, integral with the frame a aforesaid. The worm-wheel b is provided with a vertically-arranged screwthreaded perforation adapted to receive a .correspondingly-screw threaded lifting shaft or rod 6. The lower end of the latter is provided with a hook or eye 5 orother device adapted to receive clutching or clamping jaws f. The rod or shaft c is also provided with a groove g, arranged parallel with its axis, and is adapted to receive the removable feather or guide it, the detachable feature of which will be fully described hereinafter.

Mode of operation: The wood is first partly cut away from beneath the head of the bolt.

Then the clamping-jaws f are forced beneath Serial 110.102.399. (No model.)

the head of the bolt. This being done, the

device is in readiness to extract the same by.

-Z is removed and the feather h detached, thus enabling the rod 6' to be turned back to its normal. position by means of operating the handle m, secured to the upper end of the rod 6 aforesaid, after which the device is ready to be engaged with another bolt, if necessary. The clutching or clamping jaws are here shown in an ordinary form; but many other forms may be used in lieu thereof. The design of the frame may also be varied in form without departing from the spirit of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a bolt or spike extracting device the combination consisting of a portable frame, the internally-screw-threaded worm-wheel mounted at the upper portion of said portable frame, the screw-threaded lifting shaft or rod, the latter provided with the vertical groove, the detachable feather adapted to engage with said vertical groove, the worm journaled to the portable frame aforesaid and adapted to actuate theworm-wheel, the handle secured to the upper end of the vertical shaft, and the clamping-jaws connected with the lower end of said lifting shaft or rod, substantially as shown and described.

In testimony whereof I have hereunto set my hand this 9th day of April, 1902.

WILLIAM C. MORRILL.

Witnesses:

J. A. HURDLE, MABEL EDNA CARMIOHAEL. 

